通过紫外线光电子光谱和光学吸收的测量，研究人员测定了纳米晶体中电子的最低激发态能级。

By using UV photoelectron spectroscopy and optical absorption measurements, the researchers determined the energy of the lowest excited electronic states in the nanocrystals.

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集中光谱测定技术是通过使用解吸附电离集中光谱测定术来检测钞票的不同部位。

This new technique relies on using desorption ionisation mass spectrometry to test different spots on the banknote.

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他们有光谱分析的方法测定它们的颜色，看它们是饱经风霜的还是新鲜的，然后把这个数据和近地小行星的轨道历史测量数据结合起来分析。

They used a process called spectroscopy to determine their colors, to see if they were weathered or fresh, and then combined this data with measurements of the NEAs' orbital histories.

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Because only atomic hydrogen has that set of lines which means I could then take the spectra of gas phase species and use that information to identify.

我在这抬头看看然后离开，那就是氢原子,那就意味着,我可以测定,气相种类的光谱并且运用那个信息来鉴定。

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